The monograph is devoted to the complex problem of interaction of peoples from the position of mutual influence and the relationship of ethnological, demographic and behavioral factors. In a geopolitical context, such problems of the modern world as the growth of the planet's population, the demographic characteristics of the state of mankind, international population migration and a number of others are considered. A special place in the work is occupied by the disclosure of the psychological features of the interaction of peoples and states, which largely determine the position of Russia in the modern world. For students, graduate students, students of the faculties of social work, sociology, psychology, management.